Does anyone else find these bulky and prefer not to use them? I prop all my heaters next to the filter, either wedged in the corner or leaning against something.
This suction cups make the heater stand out too much!

I do think the suction cups stink but I've always heard that you're not supposed to let the heater touch the tank or the substrate or anything. Causes uneven heating in the element. My last heater actually said this in the instructions.

Ironically, our fish have plants, and caves, and choose to sleep on a suction cup, or a Thermometer, mine has done this a few times, and it's too funny, how they curve their body, right on the top and sleep there..lol